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Variational mode decomposition based modal parameter identification in civil engineering

Mingjie ZHANG, Fuyou XU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1082-1094 doi: 10.1007/s11709-019-0537-3

Abstract: An out-put only modal parameter identification method based on variational mode decomposition (VMD) isThe proposed identification method can straightforwardly extract the mode shape vectors using the modaldemonstrate the efficiency and highlight the superiority of the proposed method in modal parameter identificationThe proposed method is proved to be efficient and accurate in modal parameter identification for both

Keywords: modal parameter identification     variational mode decomposition     civil structure     nonlinear system     closely    

Non-convex sparse optimization-based impact force identification with limited vibration measurements

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0762-2

Abstract: Impact force identification is important for structure health monitoring especially in applications involvingDifferent from the traditional direct measurement method, the impact force identification technique is> regularization often identifies false forces in non-loaded regions, interfering with the accurate identificationmml:mtext>-ADMM is applied to solve the impact force identificationSimulations and experiments are performed on a composite plate to verify the identification accuracy

Keywords: impact force identification     inverse problem     sparse regularization     under-determined condition     alternating    

The research on structural damage identification using rough set and integrated neural network

Juelong LI, Hairui LI, Jianchun XING, Qiliang YANG

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 3,   Pages 305-310 doi: 10.1007/s11465-013-0259-5

Abstract:

A huge amount of information and identification accuracy in large civil engineering structural damageidentification has not been addressed yet.To efficiently solve this problem, a new damage identification method based on rough set and integratedThe decision fusion network will give the final damage identification results.The identification examples show that this method can simplify the redundant information to reduce the

Keywords: rough set     integrated neural network     damage identification     decision making fusion    

Mechanical design, modeling, and identification for a novel antagonistic variable stiffness dexterous

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0691-5

Abstract: Experimental results of the finger joint stiffness identification and finger impact tests under different

Keywords: multifingered hand     mechanism design     robot safety     variable stiffness actuator    

Damage identification in connections of moment frames using time domain responses and an optimization

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 851-866 doi: 10.1007/s11709-021-0739-3

Abstract: In this study, an optimization-based method for joint damage identification of moment frames using theThen, the problem of joint damage identification is converted to a standard optimization problem.Then, a comparison between the proposed method and the existing damage identification method is provided

Keywords: damage identification     beam-to-column connection     time-domain response     optimization    

Inverse identification of the mechanical parameters of a pipeline hoop and analysis of the effect of

Ye GAO, Wei SUN

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 358-368 doi: 10.1007/s11465-019-0539-9

Abstract: On the premise of selecting initial values reasonably, an inverse identification algorithm based on sensitivityAfter introducing the identified values into the analysis model, the reliability of the identification

Keywords: inverse identification     pipeline hoop     frequency response function     mechanical parameters     preload    

A super-element approach for structural identification in time domain

LI Jie, ZHAO Xin

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 2,   Pages 215-221 doi: 10.1007/s11465-006-0004-4

Abstract: For most time-domain identification methods, a complete measurement for unique identification resultsnumber of structural degrees of freedom (DOFs) in practical applications, and thus make the time-domain identificationThe super-element model used for time domain identification is first discussed in this study.parameterization procedure based on the sensitivities of response forces is introduced to establish the identificationSome principles are suggested on effective decomposing of the whole structure into super-elements for identification

Keywords: numerical     effective decomposing     parameterization procedure     divide-and-conquer ability     time-domain identification    

Relative vibration identification of cutter and workpiece based on improved bidimensional empirical mode

Jiasheng LI, Xingzhan LI, Wei WEI, Pinkuan LIU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 227-239 doi: 10.1007/s11465-020-0587-1

Abstract: topography representing the relative vibration between the cutter and the workpiece through feature identificationmorphology demonstrate the validity of the improved BEMD algorithm in realizing the relative vibration identification

Keywords: bidimensional empirical mode decomposition     spatial spectrum analysis     boundary effect     vibration identification    

Damage identification of a large-span concrete cable-stayed bridge based on genetic algorithm

ZHU Jinsong, XIAO Rucheng

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 170-175 doi: 10.1007/s11709-007-0018-y

Abstract: The efficiency and rationality of local elaborate non-damage-identification could be enhanced by theprimary damage identification of cable-stayed bridges on the basis of periodic detection of the cableThe genetic algorithms of damage identification for cable-stayed bridges were investigated in this paperA damage detection program for complex civil structure was generated to implement the identificationIt is demonstrated that the results of damage identification from the parametric finite element method

Keywords: accurate     primary     global stability     complex     identification    

Preload characteristics identification of the piezoelectric-actuated 1-DOF compliant nanopositioning

Ruizhou WANG, Xianmin ZHANG

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 20-36 doi: 10.1007/s11465-015-0328-z

Abstract: With the identification of the preload characteristics, the actual and comprehensive output characteristics

Keywords: nanopositioning     preload characteristic     packaged piezoelectric ceramic actuator     compliant mechanism    

Theory analysis and system identification methods on thermal dynamics characteristics of ballscrews

XIA Junyong, HU Youmin, WU Bo, SHI Tielin

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 408-415 doi: 10.1007/s11465-008-0061-y

Abstract: Two methods for system identification (the least square system identification and BP artificial neuralnetwork (ANN) system identification) are put forward to establish a dynamic characteristic model ofof thermal error of the axis in a feed system of DM4600 vertical miller is established with a fine identificationComparing the results of the two identification methods, the BP ANN system identification is more precisethan the least square system identification.

Keywords: square system     network     vertical miller     transfer     ANN    

Data-driven distribution network topology identification considering correlated generation power of distributed

Frontiers in Energy 2022, Volume 16, Issue 1,   Pages 121-129 doi: 10.1007/s11708-021-0780-x

Abstract: This paper proposes a data-driven topology identification method for distribution systems with distributednodal power injections, thus eliminating the influence of correlated nodal power injections on topology identification

Keywords: power distribution network     data-driven     topology identification     distributed energy resource     maximal    

Identification of novel mutations in and in a family with craniofacial microsomia: evidence of digenic

Frontiers of Medicine   Pages 1006-1009 doi: 10.1007/s11684-023-1000-3

Abstract: Identification of novel mutations in and in a family with craniofacial microsomia: evidence of digenic

Keywords: family craniofacial microsomia     Identification novel mutations    

Risk Identification and Mitigation Strategies for Deepwater Oilfields Development

Bao-quan Yang,Li Yang,Fan-jie Shang,Xin Zhang,Chen-xi Li

Frontiers of Engineering Management 2016, Volume 3, Issue 4,   Pages 356-361 doi: 10.15302/J-FEM-2016057

Abstract: Deepwater oilfields will become main sources of the world’s oil and gas production. It is characterized with high technology, huge investment, long duration, high risk and high profit. It is a huge system project, including exploration and appraising, field development plan (FDP) design, implementation, reservoir management and optimization. Actually, limited data, international environment and oil price will cause much uncertainty for FDP design and production management. Any unreasonable decision will cause huge loss. Thus, risk foreseeing and mitigation strategies become more important. This paper takes AKPO and EGINA as examples to analyze the main uncertainties, proposes mitigation strategies, and provides valuable experiences for the other deepwater oilfields development.

Keywords: deepwater oilfield     field development plan     implementation     reservoir management     risk identification     mitigation    

Parameter identification of interconnected power system frequency after trip-out of high voltage transmission

Xuzhan ZHOU,Shanshan LIU,Mingkun WANG,Yiping DAI,Yaohua TANG

Frontiers in Energy 2014, Volume 8, Issue 3,   Pages 386-393 doi: 10.1007/s11708-014-0323-9

Abstract: Accurate modeling and parameters of high voltage (HV) grid are critical for stability research of system frequency. In this paper, simulation modeling of the system frequency was conducted of an interconnected power system with HV transmission lines in China. Based on recorded tripping data of the HV transmission lines, system parameters were identified by using genetic algorithm (GA). The favorable agreement between simulation results and recorded data verifies the validity of gird models and the accuracy of system parameters. The results of this paper can provide reference for the stability research of HV power grid.

Keywords: high voltage (HV) grid     frequency stability parameter identification     primary frequency regulation (PFR    

Title Author Date Type Operation

Variational mode decomposition based modal parameter identification in civil engineering

Mingjie ZHANG, Fuyou XU

Journal Article

Non-convex sparse optimization-based impact force identification with limited vibration measurements

Journal Article

The research on structural damage identification using rough set and integrated neural network

Juelong LI, Hairui LI, Jianchun XING, Qiliang YANG

Journal Article

Mechanical design, modeling, and identification for a novel antagonistic variable stiffness dexterous

Journal Article

Damage identification in connections of moment frames using time domain responses and an optimization

Journal Article

Inverse identification of the mechanical parameters of a pipeline hoop and analysis of the effect of

Ye GAO, Wei SUN

Journal Article

A super-element approach for structural identification in time domain

LI Jie, ZHAO Xin

Journal Article

Relative vibration identification of cutter and workpiece based on improved bidimensional empirical mode

Jiasheng LI, Xingzhan LI, Wei WEI, Pinkuan LIU

Journal Article

Damage identification of a large-span concrete cable-stayed bridge based on genetic algorithm

ZHU Jinsong, XIAO Rucheng

Journal Article

Preload characteristics identification of the piezoelectric-actuated 1-DOF compliant nanopositioning

Ruizhou WANG, Xianmin ZHANG

Journal Article

Theory analysis and system identification methods on thermal dynamics characteristics of ballscrews

XIA Junyong, HU Youmin, WU Bo, SHI Tielin

Journal Article

Data-driven distribution network topology identification considering correlated generation power of distributed

Journal Article

Identification of novel mutations in and in a family with craniofacial microsomia: evidence of digenic

Journal Article

Risk Identification and Mitigation Strategies for Deepwater Oilfields Development

Bao-quan Yang,Li Yang,Fan-jie Shang,Xin Zhang,Chen-xi Li

Journal Article

Parameter identification of interconnected power system frequency after trip-out of high voltage transmission

Xuzhan ZHOU,Shanshan LIU,Mingkun WANG,Yiping DAI,Yaohua TANG

Journal Article